You would need to introduce a list.
For example you could have: My shopping list contains of; milk, bread, and yogurt.
Another purpose is to separate clauses.
It is an opinion rather than a fact because there is no data to support that all service members and veterans have challenges when they return. There are no factual statistics or data to back up this claim so therefore it is an opinion
A round character is a character we know mostly about, so an example of a scenario would be:
There was once a young girl named Sally, she is very tall, with brown eyes and dark black hair. She loves chocolates but hates sushi. But the one thing she loves the most is her sister Chey
They all worked in similar rooms. Doctors in the 1700s were beginning to learn proper sanitation techniques like handwashing.
